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. 2018 Mar 28;9:1257. doi: 10.1038/s41467-017-02071-5

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© The Author(s) 2018

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 5 — Combined effects of the oscillation indices on crop productivity. a shows which oscillation indices are found to be significant explanatory parameters in the multivariate regression model with crop productivity as the dependant variable, and b shows the adjusted R² of the model for each FPU. The areas where Pearson’s correlation between reported and simulated crop productivity is not significant (p > 0.1) are striped